该数据集由一包文件组成，每个文件跟踪某些行业的正规化投入成本。 Producer Price Index_datasets.txt pc.txt pc.data.75.Construction.csv pc.data.67.AdministrativeandSupportServ.csv pc.series.csv pc.product.csv pc.period.csv pc.industry.csv pc.footnote.csv pc.data.81.OtherServ